CVE-2026-128070
Nuxt dev server serves files from a parent directory that contains a lockfile
Nuxt is an open-source web development framework for Vue.js. From 3.5.0 until 4.6.4, Nuxt can choose a parent directory as the default workspaceDir in either of two cases: a stray parent lockfile when the project is outside a Git repository and has no workspace file above it, or a parent pnpm or Deno settings file that does not declare packages or a workspace, including when the project is inside a Git repository. When the development server is reachable from an untrusted network, Vite permits /_nuxt/@fs/ requests beneath that widened directory, allowing unauthenticated clients to read files such as credentials and SSH keys. The issue affects the development server only; production builds and projects whose parent directories contain no qualifying files are unaffected. This issue is fixed in version 4.6.4.
Fixes and workarounds
Fix
@nuxt/schema (npm): OSV reports a fixed version 4.6.4. Check the advisory for supported release branches.
Source: OSV GHSA-mjrq-cffv-q4qcAffected products and versions
| Product | Versions | Authority |
|---|---|---|
| nuxt nuxt |
>= 3.5.0, < 4.6.4 (affected) | CNA: GitHub_M |
| schema @nuxt |
>= 3.5.0, < 4.6.4 (affected) | CNA: GitHub_M |
@nuxt/schema@nuxt/schema
npm |
≥ 3.5.0; < 4.6.4 (affected, semver); OSV events: introduced 3.5.0; fixed 4.6.4Source events (semver)Other versions: unaffected |
OSV GHSA-mjrq-cffv-q4qc |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 3.1 / 5.9 medium |
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N | CNA: GitHub_M |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/nuxt/nuxt/security/advisories/GHSA-mjrq-cffv-q4qcCNA: GitHub_M · x_refsource_CONFIRM
- https://github.com/nuxt/nuxt/commit/89d3306d1976dd52ac2e73078806a3e889cbb8bdCNA: GitHub_M · x_refsource_MISC
- https://github.com/nuxt/nuxt/releases/tag/v4.6.4CNA: GitHub_M · x_refsource_MISC
- https://github.com/advisories/GHSA-mjrq-cffv-q4qcOSV / GitHub Security Advisories · advisory
- https://osv.dev/vulnerability/GHSA-mjrq-cffv-q4qcOSV / GitHub Security Advisories · osv
For agents and automation
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